Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1fcccbac DH |
2 | #include <linux/elf.h> |
3 | #include <linux/coredump.h> | |
4 | #include <linux/fs.h> | |
5 | #include <linux/mm.h> | |
6 | ||
7 | #include <asm/elf.h> | |
8 | ||
9 | ||
10 | Elf32_Half elf_core_extra_phdrs(void) | |
11 | { | |
12 | return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0; | |
13 | } | |
14 | ||
506f21c5 | 15 | int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset) |
1fcccbac DH |
16 | { |
17 | if ( vsyscall_ehdr ) { | |
18 | const struct elfhdr *const ehdrp = | |
19 | (struct elfhdr *) vsyscall_ehdr; | |
20 | const struct elf_phdr *const phdrp = | |
21 | (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); | |
22 | int i; | |
23 | Elf32_Off ofs = 0; | |
24 | ||
25 | for (i = 0; i < ehdrp->e_phnum; ++i) { | |
26 | struct elf_phdr phdr = phdrp[i]; | |
27 | ||
28 | if (phdr.p_type == PT_LOAD) { | |
29 | ofs = phdr.p_offset = offset; | |
30 | offset += phdr.p_filesz; | |
31 | } else { | |
32 | phdr.p_offset += ofs; | |
33 | } | |
34 | phdr.p_paddr = 0; /* match other core phdrs */ | |
506f21c5 | 35 | if (!dump_emit(cprm, &phdr, sizeof(phdr))) |
1fcccbac DH |
36 | return 0; |
37 | } | |
38 | } | |
39 | return 1; | |
40 | } | |
41 | ||
aa3e7eaf | 42 | int elf_core_write_extra_data(struct coredump_params *cprm) |
1fcccbac DH |
43 | { |
44 | if ( vsyscall_ehdr ) { | |
45 | const struct elfhdr *const ehdrp = | |
46 | (struct elfhdr *) vsyscall_ehdr; | |
47 | const struct elf_phdr *const phdrp = | |
48 | (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); | |
49 | int i; | |
50 | ||
51 | for (i = 0; i < ehdrp->e_phnum; ++i) { | |
52 | if (phdrp[i].p_type == PT_LOAD) { | |
53 | void *addr = (void *) phdrp[i].p_vaddr; | |
54 | size_t filesz = phdrp[i].p_filesz; | |
aa3e7eaf | 55 | if (!dump_emit(cprm, addr, filesz)) |
1fcccbac DH |
56 | return 0; |
57 | } | |
58 | } | |
59 | } | |
60 | return 1; | |
61 | } | |
8d9032bb DH |
62 | |
63 | size_t elf_core_extra_data_size(void) | |
64 | { | |
65 | if ( vsyscall_ehdr ) { | |
66 | const struct elfhdr *const ehdrp = | |
67 | (struct elfhdr *)vsyscall_ehdr; | |
68 | const struct elf_phdr *const phdrp = | |
69 | (const struct elf_phdr *) (vsyscall_ehdr + ehdrp->e_phoff); | |
70 | int i; | |
71 | ||
72 | for (i = 0; i < ehdrp->e_phnum; ++i) | |
73 | if (phdrp[i].p_type == PT_LOAD) | |
74 | return (size_t) phdrp[i].p_filesz; | |
75 | } | |
76 | return 0; | |
77 | } |